WindTech MM-4 Mic-Muff - Black, fits Canon GL-1, GL-2 Azden SGMx, SGM-1000, SGM-1X and Sony ECM-678 3/4" Fur length for maximum wind diffusion American made quality at a realistic, affordable price Slips over your existing windscreen, includes Velcro closure Acoustically transparent, won't degrade microphone performance